Cation Electrochemical Stability in Chloroaluminate Ionic Liquids was written by Lang, Christopher M.;Kim, Ketack;Guerra, Liezel;Kohl, Paul A.. And the article was included in Journal of Physical Chemistry B in 2005.Recommanded Product: 79917-89-8 This article mentions the following:
The electrochem. stability of 10 organic cations, which can be used in ionic liquids (IL), was studied as solutes in MeCN (ACN). The stability of 3 of the salts, BenzylMe2EtNCl (salt III), 1-butyl-2-methylpyrrolidinium chloride (salt VI), and its structural isomer, BuMe2PrNCl (salt VII), were also compared in chloroaluminate ILs. The chloroaluminate ILs of salts VI and VII are studied for the 1st time. The NaCl-neutralized ILs of salts VI and VII have m.ps. of 43.2 and 3.7°, resp. The benzyl-substituted cation, salt III, was more easily reduced in ACN or as the neutral chloroaluminate IL than the alkyl-substituted cation, salt VII, due to the better leaving ability of the benzyl group. Mass spectroscopy measurements before and after electrolysis on the benzyl-substituted solutions confirmed that reduction involves the loss of an alkyl group. In ACN, salt VI is the most difficult to reduce (1 mA/cm2 at -2.09 V) due to its cyclic structure. However, in the chloroaluminate IL, the pyrrolidinium cation was more easily reduced than salt III or its isomer, salt VII, resulting in an insoluble black deposit. This is consistent with the mass spectrometry data, which do not show formation of low-mol.-weight products, as in the reduction of salts III and VII. The IL of salt VII was the most stable in the presence of Na. Na ions could be reduced and reoxidized with a maximum Coulombic efficiency of 94.1% vs. 87.2% for salt VI. Reduction of the pyrrolidinium cation produces insoluble products, most likely through opening of the cyclic ring, and an inferior medium for Na ion reduction compared to the benzyl- and butyl-substituted cations, even though reduction of the cation occurs at a more neg. potential in MeCN. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8Recommanded Product: 79917-89-8).
1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Imidazole also acts as a microtubule destabilizing agents and inhibits topoisomerase and Cytochrome P450 Family 26 Subfamily A Member 1 (CYP26A1) enzymes.Recommanded Product: 79917-89-8
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem